High-pressure hydraulic press



Nov. 18, 1930. J. c.' soLBERG ET Al.

ATTDRNEyF-j Patented Nov. 18,1930

, UNITED*STATES PATE .CFFICE JOHN C. soL'BERG, ONARLI'NGTCN, AND FREDERICK C. LANGENBERG, or WATERTCWN, MASSACHUSETTS, AND Eni/UND M. sAWTELL'E., or NEW Yon-x, N. Y., AssreNoBs'ro ONEIDA CO1\II1V[T.T1\TITY,`y LIMITED, 0F ONEIDA, YORK, A CORPORATION'OF Yom: c y

HIGH-PRESSURE HYDRAULIC Pmiss Our invention relates ,to hydraulic presses of a peculiar character intended particularly for use in applying high pressures. Presses of ordinary construction cannot be employed,

'for applying pressures .of from 125,000 to 150,000 pounds. To make a hydraulic press commercially practical itis necessary that it be so constructed that the work can beput in place and removed qui ckly, and the pressure applied promptly;- the press being capable of withstanding the great strains to which it is subjected; and that there shall be no leakage which will reduceY the pressure'beyond that necessary to accomplish the desired result. Our present invention has for its objecta new and improved type of hy draulic press capable of use under these conditions. Such a press is capable of applying a pressure of 150,000 pounds per square inch to the work, can make at least twelve strokes an hour, and isdurableand not likely to be linjured in the course of operation.

The Yinvention will be fully understood` from the following description when taken Vin connection with thel accompanying drawings andthe novel features thereof will be pointed out and clearly defined in the claims at the close of this specification. n

In the drawings:

Fig. 1 is a vertical section of a press embodying our invention. c

Fig. 2 is a similar section of apart ofthe press, showing the ram after entering the bore of the cylinder.

The press embodying our invention includes a frame composed of, a base 10, up-

rights or tie rods 11 and a head 12. To the head is secured the ram 13 provided with a movable plunger member 4': andv a suitable packing 15 preferably constructed as shownv and 4described in a prior application for United States patent for Fluid pressure intensifier .filed June 12, 1925', by John C. Selberg, Serial No. 36,755. On thev base lO'is placed a low pressure cylinder 16 having a port 17 connected with a pipe 18 which is connected with a so-calle'd high pressure pump (not shown) ordinarily capable of delivering Awater under a pressure of 10,000 pounds to the square inch or thereabout.

a movable'cylinder acting also as a piston which is built up from three pieces which are a piston head member 19 provided with ay packing 20; a sleeve 21 and a cylinder lining 22, the `lining 22 being providedwith a bore Q to cooperate with the ram 13. Thek head 5of`tl1e lining 22 is'integral rwith the end with a tapered portion'l AThe head 19 is yprovided with a similarly shaped depression 23 within which the tapered end of the lining is received. This construction centers the' member 22 withrelation to the pistonl head member 19 thereby alining the parts coy axially vandjalso` tends to secure all the parts together, `so thatk they will act as ay unitin resisting the high pressures to which they are subjected. It will be seen' that when water under pressure isl introducedv through the pipe 18, the movable cylinder will rise, the ram 13 willienter the bore 24 and Subj ect the liquid contents 'to an intensiied pressure which Iwill in turn be transmitted to the work contained therein.` Surrounding the sleeve 21 and carried by a spacing head' 34is a guide ring l which insuresthat the movement of the movable vcylinder shall always be inline with the axis `of the ram 13.'

Y It will also be seen that ythe'head 19 is of a larger diameter than the sleeve 21 and that the headr makes a tight-joint with the wallsk of the bore'of the Xed cylinder 16'but'that the sleeve 21- does'not contact with the walls of thefbore.` kBy this construction the friction is" material-ly` reduced and the operation Vof the press is Yless affected by any elastic within uieborerofthe Cylinder 16 relocated 'walls thereof and is provided at its lower through the pipe 18 to the interior of the low pressure cylinder 16. This raises the cylinder 22 rapidly since no substantial resistance is offered. Vhen the end of the ram f1 enters the bore of the Work chamber 24,

vthe surplus Water in the Work chamber is ejected through the radial ports 28 and pipes 30. This permits the plunger to enter the bore quickly and easily and its downward movement can-continue until the ports are passed. Thereafter no more Water can escape fromthe Work cylinder and the pressure is appliedtothe Work. These ports andthe provision for permitting the escape of Water during the iirst part of the stroke ofthe press contribute greatly to the usefulness ofthe machine, since if the bore has no ports-and is filled with Water to the kbrim the piston plunger 14 is resisted before the packinghas entered'the bore and the packing is forced out horizontally and destroyedby the further upward movement of the cylinder. On the other hand, if the Work ameter of the sleeve and provided with packing making a tight joint With the bore of the xed cylinder, and means for centering said lining on said head With respect tosaid ram. K l

In testimony whereof We afIiX our signatures. y

JOI-IN C. SOLBERG.

FREDERICK C. LANGENBERG.

EDMUND M. SAWTELLE.

, chamber; is not filled completely With Water Y great care must be exercised that exactly the n right amount of water is in the cylinder since otherwise the Work will be injured. By the provision ofthe ports described and the pipes connecting themrthe safety of the press and the Worlis insuredmndthe press may be operated rapidly. Thereafter the pressure is released and the parts are permitted to return Y totheir normal position. The Work is then an y Withdrawnfrom the Work chamber.

What We claim is Y l. The improved pressure applying apparatus comprising a ram and cylinder cooperating with each other and capable of movement to cause the ram to enter or to be Withdrawn from the bore of the cylinder,

said ram having a packing thereon, said cylinder being provided with a port entering vthe side of the bore at a point distant from the )ackino on the ram said ort emerOinOi- D 7 D b through the end face of said cylinder.

3. The improved pressure applying apparatus comprising a Xed ram, a fiXedcylinder, amovable cylinder Within said fixed cylinder acting as a piston therein, said movable cylinder being composed of a sleeve, a closed ended lining within said sleeve adapted to receive said ram, anda separate head closing one end of the sleeve, said head having a diameter greater than the exterior die 

